Basilar invagination

Case contributed by Mersad Mehrnahad
Diagnosis certain

Presentation

Out patient with chief compliant of posterior cervical pain.

Patient Data

Age: 80 years
Gender: Male

Annotated images

mri

Basilar invagination, the tip of odontoid is higher than McRae's line and the distance between the tip of odontoid and the other two lines (Chamberlain's line and McGregor's line) is higher than normal. All findings are suggestive of basilar invagination.

Case Discussion

Basilar invagination in outpatient because of osteoporosis.

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